During a weekly IT audit, you discover that the company's Windows file server performs a nightly full backup to an external USB hard drive located on the same rack as the server. The CIO worries that a single localized disaster-such as a building fire, flood, or theft-could destroy both the production data and the backup media. Under the CompTIA-recommended 3-2-1 policy, which modification to the backup rotation scheme would BEST mitigate this specific risk while still allowing quick on-site restores?
Convert nightly full backups to differential backups stored on the same USB drive.
Replace the USB drive with a RAID 1 array inside the server chassis.
Move one backup copy to an off-site location or cloud storage after each backup cycle.
Increase backup frequency from nightly to hourly using the same on-site media.
Keeping at least one backup in a physically separate location-whether a secure vault, a second office, or a cloud provider-is the key safeguard against local disasters. This off-site copy satisfies the "1" in the 3-2-1 rule and ensures data survives if the primary site is destroyed. Changing backup type (differential), adding RAID, or simply running backups more often still leaves every copy in the same building, so they would all be lost in a fire, flood, or theft.
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CompTIA A+ 220-1102 (V14)
Operational Procedures
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